CMX-2 to eliminate mechanical transformer noise

[gfmucci]

I have an Outlaw RR-2150 integrated amp with a toroidal transformer that produces mechanical transformer noise.  Will the CMX-2 eliminate that noise? 

I plugged the amp into several different locations, including the non-backup "surge only" side of a large APC UPC without any change to the transformer noise.

[vcautokid]

Noting the 1st paragraph, it will do as you asked, and much more. Give it a try. Let us know if it resovles your transformer noise issue.





OVERVIEW(ACTIVE TAB)
FEATURES
SPECS

The CMX-2 offers a solution to a less-familiar, common problem - DC offset on the AC power line. DC offset is usually the result of unbalanced loads or by flaws in the power distribution system itself. It can cause DC current flow in the transformers that power your audio equipment, making them run hotter, produce more mechanical hum, and, in extreme cases, even potentially causing permanent damage. In addition to removing line noise, the CMX-2 also totally eliminates this annoying and potentially damaging problem as well.

The CMX-2 delivers clean power, free of high-frequency line noise and potentially audible DC offsets to your audio components. It also continuously monitors your AC power line wiring integrity and alerts you to common fault conditions like open grounds and reversed lines.

Constructed from premium components, the CMX-2 utilizes our exclusive Power Direct Connect™ mounting system, which connects the commercial grade outlet directly to the high current circuit board by the shortest possible path, eliminating power robbing resistive losses and other problems caused by less reliable and robust wiring techniques. It also uses top grade common mode and differential mode L-C filtering to reduce oreliminate all types of high-frequency noise.




Ideal accessory for high performance electronics.
Precision DC offset eliminator.
High-quality common mode and differential mode L-C noise filtering.
Continuous line-status monitoring - provides continuous real-time indicators that show the status of Hot, Neutral, and Ground lines.
Power Direct Connect™ mounting system, which connects the outlets directly to the circuit board.
Premium high-quality components and a heavy-duty double sided FR4 circuit board with high current paths on both sides.
Two commercial grade AC outlets.
Detachable IEC high current, 14 gauge, 2 meter power cord included.
High reliability resettable magnetic circuit breaker.
Constructed from machined aluminum.
Can be mounted vertically or horizontally.

AC power source:
120 VAC +/- 20% @ 60 Hz; 15 Amps
Load (total for both outlets):
15 amps continuous rating. Magnetic circuit breaker allows for short-term inrush current of up to 250% of rated load
Power Cable:
Standard IEC detachable power cord; 7 feetlong; 14 AWG x 3
Size:
unboxed: 4” wide x 1 3/4” high x 14 1/2” deep
boxed: 9" wide x 4 1/4" high x 18 3/4" deep
Weight: 3.4 lbs (5 lbs boxed)
CMX-6 $119 CMX-2 $99 RK-1 $79.99 ASM Bracket $49 ET-3 $39.99 Black Trim $20 Silver Trim $20
ULTRA
Rack Ears $39
X-SERIES
XBAL-1x2 $12.99

[gfmucci]

Thanks. It won't hurt to give it a try. Did you personally use a CMX-2 to eliminate transformer noise?


By the way, what is that piece of equipment in the background of your photo?

[pedrocols]

What I don't understand is where this DC current is coming from.

[gfmucci]

Excellent question.  Is it a source we have control over such as another electrical device in the house that we could eliminate or put on a different circuit if we knew where it was coming from, or is it something we have no control over, such as merely dirty power coming into the house.

Since it may take me half a lifetime to determine the source, I hope this device gets rid of the interference, whatever the source.

[Gary Cook]

In Australia when we have this sort of problem we contact the electricity supplier and have them come and test the power supply. It's a service they have to offer to their customers if they have an issue caused by the power supply not being as per standard. I'd be surprised if the USA wasn't similar.

Cheers
Gary

[aud]

Jan 20, 2015 15:02:25 GMT -5 gfmucci said:

Thanks. It won't hurt to give it a try. Did you personally use a CMX-2 to eliminate transformer noise?


By the way, what is that piece of equipment in the background of your photo?

If you buy one and it truly eliminates the T-Former noise, please let us know!

[pedrocols]

Jan 20, 2015 19:25:14 GMT -5 Gary Cook said:

In Australia when we have this sort of problem we contact the electricity supplier and have them come and test the power supply. It's a service they have to offer to their customers if they have an issue caused by the power supply not being as per standard. I'd be surprised if the USA wasn't similar.

Cheers
Gary

I am sure they can provide the same service here in the USA. However, it will probably cost you an arm and a leg...

[hemster]

Jan 20, 2015 20:08:31 GMT -5 pedrocols said:

Jan 20, 2015 19:25:14 GMT -5 Gary Cook said:

In Australia when we have this sort of problem we contact the electricity supplier and have them come and test the power supply. It's a service they have to offer to their customers if they have an issue caused by the power supply not being as per standard. I'd be surprised if the USA wasn't similar.

Cheers
Gary

I am sure they can provide the same service here in the USA. However, it will probably cost you an arm and a leg...

In many countries utilities are provided by a government entity that is accountable to the public.  As such this is a free service to the people. This includes private entities that are bound by legislation to comply with govt. requirements.

Unfortunately this is not the case with U.S. companies. I abhor that as I miss that dashboard to the consumer. 








unfotu

[emovac]

PS Audio Humbuster III will do same trick, but they are hard to find anymore. I bought one when I was chasing some hum in an older amp I had. Kept it, and still use it for my newer amps that don't have DC hum.